Oil can



T. O. BAKKEN OIL CAN Filed SGDt. 19. 1921 Patented nays, 1924.

PATENT orFicE.

TOLLEF O. BAKKEN, QF BODE, TOWA.

@IL CAN.

To all whom t may concern: Be it known that ToLLEr O. BAKKEN, citizen of the United States, residing at Bode,

in the county of Humboldt and State of Iowa, has invented certain new and useful Improvements in Oil Cans, of which the following is a speciication.

This invention relates to certain new and useful improvements in an oil can of the type embodying a resilient bottom or base for being pressed inwardly to expel the oil from the spout of the can.

The invention has for an object to provide al can or oil container which will expel the lubricant with greater pressure and either drop by drop, under slight pressure, or in a stream under full pressure. Y

The invention further resides in the provision of a cup-shape member carried o-n the inside of the resilient bottom to serve in the capacity of a plunger for efficiently expelling the lubricant.

In the drawing,

Figure 1, is a vertical section through an oil container constructed in accordance with the present invention; and

Figure 2, is a horizontal section on line 2-2 of Figure 1.

The oil can in the present instance is substantially heini-spherical in shape having a resilient bottom 2 and an open top 3 to which is applied the dispensing nozzle or spout 4l. The peripheral edge of the bottom is provided with a down-turned flange 5 and is engaged on. an annular shoulder or seat 6 about the lower opened end or bottom edge of the can body 1, said edge being extended from said shoulder about the flange 5 and is then bent inwardly and upwardly about the same, as indicated at 7, to provide a tight joint between the bottom 2 and the body 1.

The bottom 2 is provided with a central, spheroidal depression 8 which is joined to the surrounding portion thereof by an annular bead 9, the latter increasing the resiliency of the bulged portion S. A cupshape expeller member 10 is arranged within the body 1 and is secured at a central point to the bulged portion 8 of the bottom as by a fastener 11, the bottom of said cup-shaped member being also rounded so as to snugly or` conformably nest into the bottom. The cup member 10 is also provided with an upstanding, annular flange 12 which collects or confines a certain amount of the lubricant and throws it upwardly or toward the spout when the bottom is pressed inwardly.

In practice, when the outwardly convex bot-tom portion 8 is pressed inwardly the edge port-ions of the cup-member 10 are moved inwardly relative to the underlying bead 9, and when the bottom is pressed in to its fullest extent, said bulged portion will then be convexed on its inner side and support thecconvex bottom of the cupmember only aat the centrally located point of securement 11. Thus, the inward springing action of the bottom 8 will effect an inwardbodily movement of the cup member and since the said resilient portion 8 will spring inwardly with a snap action after having' been moved beyond dead center, a like snap action will be imparted to the oil confining cup 10. This will result in a forceful ejection 0f the lubricant from the spout 4. The heavy pressure obtainable will be accentuated when it is noted thait the cup member approaches the side walls of the body 1 and thereby restricts the oil against escaping around the cup member. Thus, the cupi member will act as a plunger, being reciprocated within the lower portion of the body by mere flexur-e of the bottom 8. Consequently, the slight depression or springing of the bottom is materially accentuated by the bodily reciprocation of ythe broad cup member. The periphery of the cup member, as it approaches the walls of the body, will gradually increase its expelling force by reason of the decrease in the amount of lubricant escaping about the cup member.

A light pressure on the bottom, insufficient to move the bulged portion inwardly beyond dead center, will provide a drop-by-drop or slow expulsion of the oil. An increased flow will follow the applica-tion of a heavier pressure. The cup member functions in the capacity of a plunger and movesbodily inwardly with the gradual flexing ait the bottom of the oil can. As above stated a small quantity of lubricant will flow under the control of a light pressure on the bottom while a large quantity of the lubricant will be obtainable upon pressing the bottom inwardly beyond, dead center whereupon the latter portion of the inward feed movement will occur automatically or after the manner of a snap action. Thus, the final portion of the feed movement will cause the cup plunger to expel a large quantity of lubrieant ahead of it. `When pressure is released the bottom will return to normal and draw the cupdownwardly into nesting relation therewith, which will force any lubricant which may have esoaped over the side of the cup outwardly and back over the edge of the cup for being subsequently expelled.

`What is claimed is:

An oil can comprising a body of substantiallyl semi-spheroidal shape having a bottom centrally and normally depressed for being sprung inwardly to expel the lubricant, and a cup-shaped member having a depressed bottom for normally nesting in the depressed bottom of the body and secured thereto at a single point whereby the irst bottom may be flexed inwardly uninterrupted by reason of the attachment of the cup-shaped member and independently of any {i-exing of the second bottom.

In testimony whereof I aix my signature.

TOLLEF O. BAKKEN. 

